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[...]Taban and associates reported a unilateral case of CRFs with no papilledema, who was lost to follow-up.4 After 2 years, the patient was noted to have a relative afferent pupillary defect, papilledema, and temporal disc pallor, and a parasellar meningioma was detected on magnetic resonance imaging.4 Musetti and associates raise an important issue regarding suspicion that increased intracranial pressure may lead to idiopathic CRFs in the absence of papilledema. Furthermore, our neuro-ophthalmology colleagues indicated that they would rarely consider referring such patients to the retina service. [...]we believe that we may be subject to a referral bias in our study.